Please support java.util.Calendar by default

What steps will reproduce the problem?
1. Create a Class Customer with 
Customer {
 String name;
 Calendar timestamp;
}
2.  Try Serializing this class and you will get an exception for Calendar

3.
            Customer c = new Customer();
        c.setName("jjj sdss");
        c.setRegTime(Calendar.getInstance());
                Gson gson = new Gson();
        String json = gson.toJson(c);

What is the expected output? What do you see instead?
Calendar seems to be not supported


What version of the product are you using? On what operating system?


Please provide any additional information below.
java.lang.RuntimeException: Unable to invoke no-args constructor for class
java.util.Calendar. Register an InstanceCreator with Gson for this type may
fix this problem.



Can java.util.Calendar be supported by default ??? 

Original issue reported on code.google.com by [e-mail] on 5 Mar 2009 at 8:01

[tudorpavel]

It would be nice to support java.util.Calendar model attributes for converting from an ISO 8601 format like 2016-02-29T15:00:00+02:00, in order to store both the UTC datetime and the time zone data.

[brandoFS]

@GoogleCodeExporter how would I parse a string in format “yyyy-MM-dd” into Calendar object using GSON ??